Spring-hinge for doors.



E. BOMMER.

SPRING HINGE FOR DOORS.

APPLICATION IILBD APR. 15, 1913. RENEWED JULY 15,'1914.

1,131,659, Patented Mar. 16,1915.

EMIL BOMMER, OF NEW YORK, N. Y.

SPRING-HINGE FOR DOORS.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filed April 15, 1913, Serial No. 761,139. Renewed July 15, 1914. Serial No. 851,226.

To all whom it may concern:

Be it known that I, EMIL BOMMER, a citizen of the United States of America, residing in New York, in the borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Spring-Hinges for Doors, of which the following is a specification.

This invention relates to certain improvements in the spring-hinge for doors for which Letters Patent were granted to me heretofore numbered 825,104 and dated July 3d, 1906 and by which the construction of the same is simplified and rendered more reliable and effective, and for this purpose the invention consists of a spring-hinge which will be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawing, Figure 1 represents a side-elevation of a door with my improved spring-hinge shown in position at the lower corner thereof, Fig. 2 is a horizontal section on line 2, 2, Fig. 3, drawn on a larger scale, Fig. 3 is a vertical longitudinal section through the spring-hinge and the stationary floor-plate of the same, Fig. 4 is a horizontal section on line 4, 4:, Fig. 3, Fig. 5 is a vertical transverse section on line 5, 5, Fig. 3, and Fig. 6 is a detail of the upper end of the pintle, showing the guide-grooves on the same.

Similar letters of reference responding parts throughout figures of the drawing.

Referring to the drawing, D represents a swing-door and D the casing of the same. The lower rear-corner of the door is provided with a mortise of suflicient size for inserting a spring-hinge therein which corresponds in size and strength to the size and weight of the door. Below the springhinge, and axially in line with the pintle P of the same, is arranged a floor-plate B, which is attached by means of fastening screws 6 to the floor. The floor-plate B is provided with a tapering socket b of square cross-section for receiving the lower corresponding-tapered and squared end p of the pintle P and holding it thereby in a non-rotatable position. On the lower end of the pintle P is j ournaled an oblong frame indicate corthe different F which is provided at its upper end with a hole into which, and into a socket in the upper end of the pintle P is inserted an auxiliary smaller pintle p by which the connection of the pintle with the hinge frame F of the spring-hinge is made. The hinge-frame F is provided with avertical extension 7' at its upper and with a horizontal extension f at its lower end, which ends are attached to the door by means of fastening screws 7, as shown in Fig. 3. The hingeframe F is preferably made of cast metal and covered at its outer vertical portion by a sheet-metal facing f which is lapped inwardly over the edges of the outer wall of the frame, as shown in Figs. 2 and 3. The spring-hinge is inclosed by sheet-metal sideplates f which are attached to the lower corner of the door and which serve to protect the interior parts of the spring-hinge against the ingress of dust.

On the pintle P is arranged at the in terior of the frame F a coil-spring S of sufficient power to return the door from its open into its closed position. The lower end of the coil-spring S is bent downwardly and inserted into a recess k of the lower spring-holder H, while the upper end of the coil-spring S is provided with an upwardly-bent end which is inserted into a recess lb of the upper spring-holder H in the usual manner. The lower springholder H is provided with a lug 71. at its circumference and a pin h at its interior. The upper spring-holder H is provided with radial holes 72. for inserting a tensionpin it by which the coil-spring S is set to tension in the usual manner. Above the upper spring-holder H is arranged a ten sion-collar H which has also a lug k on its circumference and a pin 7? on its interior, said lug having a downwardly-extending stop 72% adapted to receive the recoil of the hinge-spring S upon the tension-pin h of the upper spring-holder H after the spring is set to tension, and to transmit said recoil by the interior pins if, 72." of the tension-collar H and of the lower springholder H to the ends or stops p and p of horizontal guide-grooves p and 72 which extend laterally from vertical guidegrooves 22 and p on the pintle P, and hold said interior pins 7L and [L4 in contact therewith in order to retain the door in its normally closed position and locate the lug k of the lower spring-holder and the lug k of the tension-collar in correct alinement with the cheeks c of the hinge-frame F, and, when the door is swung into open position in one or the other direction to again return the same into its normally closed position by the recoil of the hingespring S. The upper and lower ends of the pintle P are preferably made larger in diameter than the middle portion for arranging thereon the horizontal and vertical grooves 19 .10 and 32*, p at the upper and lowerends of the same. The inwardly-extending pin 72. of the tension-collar H is adapted to travel in the horizontal groove 29 of the upper enlarged portion of the .pintle. P, while the inwardly-extending pin 75* of the lower spring-holder H is adapted to travel in the horizontal groove p in the lower enlarged portion of the pintle P. The length of the horizontal grooves 77 p is proportioned to the angle through which the door is desired to be opened, one horizontal groove extending in one, the other in the opposite direction from the vertical grooves so as to provide for the opening of the door in one or the opposite direction. The contact-faces of the lugs h and [L2 on the "spring-holder H and tensioncollar H are held at all times when the coil-spring S is under tension in correct position or vertical alinemen-t with each other by the abutting of the interior pins k and h against the ends or stops 7) and p of the horizontal guide-grooves p and 79 Between the upper horizontal portion of the hinge-frame F and the tension-collar H is preferably interposed on the auxiliary pintle an antifriction-washer or ball bearing a, which serves to take up the weight of the door upon the pintle and permit the easy and noiseless motion of the spring-hinge when opening or closing the door.

The inner wall of the oblong hinge-frame F is provided near its upper and lower ends with projecting checks 0, which are preferably made integral with the hingeframe and arranged so as to be in the path of the exterior lugs k and 71,2 of the springholder H and tension collar H so that when the coil-spring S is under tension, the lower and upper checks 0 are in contact with the exterior lugs of the spring-holder and tension collar to hold the door in its normally closed position. For this purpose the projecting cheeks are preferably arranged at one side and the other of the vertical center-line of the inner vertical wall of the hinge-frame F. The tension of the coilspring increases as the door is opened in one or the other direction while on the release of the door the recoil of the spring returns the door to its normal, closed position, the interior pins k and 7& being again seated in the ends or stops 9 and p of the horizontal grooves 79 and p of the pintle P.

The parts of the spring-hinge can be readily assembled by first inserting the pintl'e through the lower ournal of the hingeframe and then placing successively, one after the other, the lower spring-holder, the coil-spring, the upper spring-holder, the tension collar, and the antii'riction-bearing in position on the pintle, and then connecting the same by the auxiliary pintle into proper position in the hinge-frame, the vertical grooves of the pintle permitting the slipping in of the interior pins of the lower spring-holder and tensioncollar. The hinge-frame is then attached to the lower corner of the door in the manner described. It will also be understood that the projections or cheeks 0 might be located on either one of the inner walls of the hingeframe, or one cheek 0 might be located at the upper part of one of the inner walls of the hinge-frame, while the other cheek 0 may be located at the lower part of the other inner wall of the hinge-frame without changing the spirit or nature of this invention.

The advantages of the improved springhinge for doors are that by its construction the assembling of the parts is greatly simplified and that it forms a strong and effective hinge for returning the door into closed position after the same has been opened in one direction or the other.

One embodiment of my invention has been shown and described, but it is clear that changes may be .made therein without departing from the spirit of my invention, as defined in the appended claims.

I claim:

1. In a spring-hinge for doors, the combination of a non-rotatable pintle secured to the floor, an oblong hinge-frame attached to the door and journaled on said pintle, said pintle being provided with enlarged upper and lower ends having horizontal guidegrooves,a lower spring-holder on said pintle provided with an interior pin engaging the lower guide-groove, an upper spring-holder having radial holes, a coil-spring engaging said spring-holders, a tension-collar adjacent to the upper spring-holder provided with an interior pin engaging the upper guide-groove of the pintle, an exterior lug on the lower spring-holder and on the tensien-collanthe lug of the latter being eX- tended over the upper spring-holder, a tension-pin inserted into one of the holes of the upper spring-holder and abutting against the extension of the lug on the tensioncollar, and cheeks on the inner wall of the hinge-frame adapted to engage either the lug on the lower spring-holder or the lug on the tension-collar according as the door is moved in one or the other direction.

2. In a spring-hinge, the combination with a non-rotatable pintle secured to the floor, an oblong hinge-frame attached to the door and journaled on said pintle, said pintle being provided with horizontal grooves and vertical guide-grooves connected therewith and with a socket in its upper end, an auxiliary pintle connecting the upper end of the pintle with the upper end of the hinge-frame, a lower springholder on the pintle provided with an inwardly-projecting pin for engaging the lower grooves of the main-pintle, an upper springholder, a coil-spring engaging said spring-holders, a tension-collar adjacent to the upper spring-holder provided with an inwardly-projecting pin for engaging the upper guide-grooves of the pintle, exterior lugs on the lower spring-holder and tensioncollar, the lug of the tension-collar being provided with a downwardly-extending stop, and a tension-pin inserted into holes of the upper springholder and engaging the stop on the tension-collar, the auxiliary pintle being disconnectible from the upper portion of the hinge-frame and the upper end of the pintle, permitting the assembling of the spring-holders, coil-spring and ten sion-collar on the pintle.

3. In a spring-hinge for doors, the 00111- bination of a non-rotatable pintle, an oblong hinge-frame journaled on said pintle being provided with a socket in its upper end, a spring-holder at the lower end of the pintle, a spring-holder at the upper end or the pintle, a tension-collar above the upper springholder, a coil-spring engaging the lower and upper spring-holders, and an auxiliary pintle connecting the upper end of the hingeframe with the socketed upper end of the pintle.

l. In a spring-hinge for doors, the coinbination of a nonrotatable pintle, an oblong hinge-frame journaled on said pintle, said pintle being provided with horizontal guidegrooves and said hinge-frame being provided with stop-cheeks at its upper and lower ends, a lower spring-holder, an upper spring-holder, a coil-spring connecting said spring-holders, a tensioncollar above the upper spring-holder, interior pins on the lower spring-holder and tension-collar, exterior lugs on the same, the lug on the tension-collar extending over the upper springholder, a tension-pin in the upper springholder abutting against the extension-lug of the tension-collar, said horizontal guidegrooves extending in opposite directions toward the contact-faces of the exterior lugs.

5. In a spring-hinge for doors, the combination of a non-rotatable pintle provided with horizontal guide-grooves, an oblong hinge-frame journaled on said pintle and the inner wall of which is provided with stop-cheeks at the upper and lower ends, a lower spring-holder, an upper springholder, a coil-spring connecting said springholders, a tension-collar above the upper spring-holder, an interior pin on the lower spring-holder and on the tension-collar, exterior lugs on the same, the lug of the tension-collar extending over the upper springholder, a tension-pin in the upper springholder abutting against the extension-lug of the tension collar, the lugs on the lower spring-holder and upper tension-collar be ing in the path of the lower or upper cheek of the hinge-frame when the door is opened in one or the other direction, the length of the horizontal grooves of the pintle determining the angular swing of the door.

6. In a spring-hinge for doors, the C0111- hination of a non-rotatable pintle having guide-grooves, spring-holders thereon, a coil-spring for said spring-holders, a tension-collar, pins in the spring-holders and in the tension-collar, the interior pin of one of the springholders and of the tensioncollar abutting against one end of the guidegrooves of the pintle when the door is in closed position and the interior pin of the other tension-collar abutting against the opposite end of saic grooves when the door is in fully opened position.

7. In a spring-hinge for doors, a non-rotatable pintle, horizontal guide-grooves on the ends of the pintle, vertical guide-grooves extending from the horizontal guide-grooves toward each other, the horizontal guidegrooves extending in opposite direction to each other and determining by their length the angular swing of the door in one or the opposite direction.

8. In a spring-hinge for doors, the combination of a non-rotatable pintle having guidegrooves, springholders thereon, a tension-collar, pins in one of the spring-hold ers and in the tension-collar, and exterior lugs on one of the spring-holders and tensioncollar, the lug of the tension-collar extending over the upper spring-holder and engaged by the pin of the upper springholder by the recoil of the spring.

9. In a spring-hinge for doors, the co1nbination of a non-rotatable pintle having guide-grooves, a hinge-frame therefor, spring-holders thereon, a tension-collar, pins in one of the spring-holders and in the tension-collar, exterior lugs on one of the springholders 'and tension-collar, and checks on the hinge-fraine adapted to be engaged by said lugs by the recoil oi the spring when the door is opened in one or the other direction.

10. In a spring-hinge for doors, the com- In testimony, that I claim the foregoing bination of a non-rotatable pintle, a hinge as my invention, I have signed my name in frame ournaled on sand plntle and provlded presence of two subscrlblng wltnesses.

with a socket in its upper end, and an aux- EMIL BOMMER. 5 iliary pintle connecting the upper end of \Vitnesses:

the hinge-frame with the socketed upper PAUL GOEPEL,

end of the pintle. JOHN MURTAGH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

